Question

select the common noun(s). spongebob squarepants showed great bravery.

Explanation:

A common noun is a general name for a person, place, thing, or idea, not a specific one. In the sentence "SpongeBob SquarePants showed great bravery", "SpongeBob SquarePants" is a proper noun (specific name), while "bravery" is a common noun as it refers to the general concept of being brave.

Answer:

bravery